Trench K Phosphate Occurrence

The Trench K Phosphate Occurrence is a phosphorus-phosphates mine located in Teton county, Idaho at an elevation of 6,601 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Name: Trench K Phosphate Occurrence  

State:  Idaho

County:  Teton

Elevation: 6,601 Feet (2,012 Meters)

Primary Mineral: Phosphorus-Phosphates

Lat, Long: 43.4572, -111.11440

Map: View on Google Maps

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Satelite image of the Trench K Phosphate Occurrence

Trench K Phosphate Occurrence MRDS details

Site Name

Primary: Trench K Phosphate Occurrence


Primary: Phosphorus-Phosphates
Tertiary: Vanadium


State: Idaho
County: Teton
District: Pine Creek District

Land Status

Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Administrative Organization: Targhee National Forest


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Record Type: Site
Operation Category: Occurrence
Operation Type: Surface
Discovery Method: Ore-Mineral In Place
Years of Production:
Significant: N
Deposit Size: S


General Physiographic Area: Rocky Mountain System
Physiographic Province: Middle Rocky Mountains
Physiographic Detail: Snake River Range

Mineral Deposit Model

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Type: L
Description: Trench K Section Straddled By A Fault


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Name: Mudstone
Role: Host
Age Type: Host Rock
Age Young: Late Permian

Analytical Data

Analytical Data: AVE CA3(PO4)2 CONTENT IS 14.4 %
Analytical Data: THIS IS EQUIVALENT TO 22.1 % CA3(PO4)2
Analytical Data: 10.1 % P2O5 MAXIMUM FOR 9 SAMPLES


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Comment (Location): South Bank Of Palisades Creek

Comment (Deposit): Thickness Is Not Representative Of Phosphate Bed In Entire Area; There Are 9 Beds Of Phosphate Rock, The Best Of Which Is 3.1 Ft; Thickness Above Is Total For Phosphatic Shale Member


Reference (Deposit): 1944 Recon Gardner, L. S., Bulletin 944 - A

Reference (Deposit): V.E. Mitchell, Et. Al; Mines And Prospects Map Series, 1981, Driggs Quad, Location No. 87

Reference (Deposit): Gardner, L. S., 1944 , Phosphate Deposits Of The Teton Basin Area, Idaho And Wyoming: USGS Bulletin 944 - A

Reference (Deposit): 1927 Recon Mansfield, G. R., Prof. Paper 152

Reference (Deposit): 1933 Compile Usda Tech. Bulletin 364

Idaho Gold

Where to Find Gold in Idaho

"Where to Find Gold in Idaho" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in Idaho. Read more at Where to Find Gold in Idaho.